Loans and Allowance for Loan and Lease Losses (Narrative) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015	Dec. 31, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses	$ 6,912,000	$ 6,851,000	$ 6,912,000	$ 6,851,000	$ 6,439,000	$ 6,168,000	$ 6,566,000	$ 6,716,000
Financing Receivable Deferred Fees And Costs	200,000		200,000			178,000
Financing Receivable, Modifications, Recorded Investment	2,700,000		2,700,000			2,805,000
Other Real Estate	177,000		177,000			358,000
Two Unrelated Borrowers [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Recorded Investment		3,411,000		3,411,000
Nonaccruing [Member] | One Large Relationships [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Recorded Investment	1,319,000		1,319,000			1,370,000
Nonaccruing [Member] | Nine Loans With Four Relationships [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Recorded Investment						2,346,000
Nonaccruing [Member] | Eight Loans With Three Relationships [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Recorded Investment	1,768,000		1,768,000
Accruing [Member] | Five Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Recorded Investment	932,000		932,000
Accruing [Member] | Four Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Recorded Investment	582,000		582,000			459,000
Accruing [Member] | One Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Recorded Investment	521,000		521,000
Unfunded Lending Commitments [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses	117,000		117,000			94,500
Commercial Portfolio [Member] | Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses	1,372,000	1,748,000	1,372,000	1,748,000	1,427,000	1,393,000	1,639,000	1,393,000
Impaired Financing Receivable, Interest Income, Cash Basis Method		105,000		105,000
Commercial Portfolio [Member] | Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses	4,241,000	3,891,000	4,241,000	3,891,000	3,777,000	3,552,000	3,626,000	3,925,000
Impaired Financing Receivable, Interest Income, Cash Basis Method		347,000		347,000
Commercial Portfolio [Member] | Commercial Real Estate [Member] | Accruing [Member] | Other Borrower [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Recorded Investment						395,000
Commercial Portfolio [Member] | Commercial Real Estate [Member] | Accruing [Member] | One Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Recorded Investment	350,000		350,000
Commercial Portfolio [Member] | Commercial Real Estate - Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses	120,000	40,000	120,000	40,000	119,000	153,000	35,000	33,000
Commercial Portfolio [Member] | Lease Financing [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses	1,000	2,000	1,000	2,000	1,000	1,000	1,000	2,000
Consumer Portfolio [Member] | Residential Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses	521,000	481,000	521,000	481,000	516,000	534,000	544,000	450,000
Impaired Financing Receivable, Interest Income, Cash Basis Method	7,000		13,000
Consumer Portfolio [Member] | Residential Mortgage [Member] | Accruing [Member] | Three Unrelated Borrowers [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Recorded Investment						64,000
Consumer Portfolio [Member] | Home Equity [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses	325,000	611,000	325,000	611,000	303,000	317,000	519,000	653,000
Impaired Financing Receivable, Interest Income, Cash Basis Method
Consumer Portfolio [Member] | Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses	9,000	40,000	9,000	40,000	9,000	12,000	37,000	35,000
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses	$ 323,000	$ 38,000	$ 323,000	$ 38,000	$ 287,000	$ 206,000	$ 165,000	$ 225,000